I've often wondered, what kind of voice would suit to my favorite post-rock and post-metal bands like Pelican, Russian Circles, and Toundra, and what would that voice sing about? I've known the answer ever since I first heard the French band Endeavour. It was clear to me then that the music had to be thematically situated in the delicate, fragile realm of the human soul, interpreted by a voice that perfectly balances anger, melancholy, and intensity. James Maynard Keenan of Tool and Joel...